Tire-valve and cap.



No. 657,572. Patented Sept. ll, I900.

G. H. F. SCHRADEB.

TIRE VALVE AND CAP.

(Applicatidn filed Jul. 4 1900.)

(No Model.)

IQNVEN'TOR:

WITNESSES: 5'

7 ml By Aztomeys, f M fflw a "m: uoRms PETERS co., moYaLrmm wasumu'ronfu 6,;

' UNITED STATEs PATENT OFFICE.

G ORGE H. F. soHR nER, OF New YORK, it.

TIRE-VALVE AND 0A5.

SPECIFICATiOfi forming part of Letters Patent No. 657,572, dated aata 11, 1906. Original application filed J 11116 21, 1898, Serial No. 684,062. Dividedand this application filed January 4, 1900. Serial No. 337. (l lo model.)

This application is a division of my appli cation, Serial No. 684,062, filed June 21, 1898,

for improvements in tirevalves and caps.

This invention relates to caps for tireand other valves and aims to provide certain im-' provements therein. a

Heretofore tire-valves have been constructed with a tubular plug screwed within asocket in the shell for holding the valve-seat in place, through which plug the valve-stem or deflating-pin has projected, so that byinserting a tool into the socket the end of the stem could be reached for deflating'the valve, or by in-.

serting a screw-driver and pressing in the stem until the screw-notch of the plug was engaged the plug could be unscrewed for permitting access to the valve proper. The pressure and spring tension against the valvestem have acted to disengage the screwdriver unless great care was taken and acontinual pressure exerted to hold it in engagement, making the act of insertingor removing the plug a difficult and delicate one. The screw-driver has endangered bending or impairment of the stem by reason of the liability of the latter to get at one side of the screw-driver tip and be twisted, owing to'its slender proportions, a slight impairment frequently serving'to destroy the efiectiveness of the valve proper. The combined screwdriver and deflating projection has usually.

and one which can be used for unscrewing the plug without dangerto the stem or interference therewith. To this endtin carrying out the preferred form of my invention I provide a cap for closing the end of the shell which has a tubular projection of sufficient internal diameter to freely pass over the stem.

of a valve when the cap is inverted, which projection is provided at its extremity with screw-driving provisions for engaging like provisions on a valve-plug, and I provide certain other features of improvement, which will be hereinafter fully set forth.

My improved cap is especially applicable for use with valves in which the valve-stem projects beyond the shell, but may be advantageously employed with valves of other conistructions.

, Referring to the drawings, which illustrate one adaptation of my invention, Figure 1 is a side elevation of a tire-valve, showing the preferred form of my improved cap in place thereon. Fig. 2 is an elevation, partly in axial section, showingthe cap applied; and

Fig. 3 is a similar view showing the cap inverted for screwing the plug.

Referring to the drawings, let A represent the valve-shell; B, the cap; 0, the projection on the latter; E, the plug; F, the socket for :the plug; I, the valve-stem passing through the plug, and H the packing-washer in the cap. In general these parts may be of any suitable construction and operation, the internal parts shown being adapted tobe in serted or removed fromthe shell by screwing or unscrewing the plug E, which for this purpose has a screw-driver provision 0., adapted to be engaged by the screw-driver provision b of the cap. The valve proper (not shown) may be of any suitable construction and may be pressed inwardly by the stem I to deflate the valve in the usual manner. The stem I preferably extends outwardly to near or beyond the end of theshell. The screw-driver provision at on the plug preferably consists of diametrically-opposite projections on the ,lar is preferably formed witht-wo notches b,

and the internalsocket'm of which is of sufficie'nt size to passfreely over the outer end of the stem .I whenfthe projection isinserted: into the socket F for screwing .in or outthe -plug,;.in whichcase the stem passcs, within the-socket in the projection and cannot exertany tendency to throw the cap out of engage inentwith theplug, n'orcan the stem beinjured orintei'fered with by the projection of the'cap. -The socket on is preferably a tubular exte'nsion. of the cavity in the cap'and is formed therein in any'suitable way. In;

; the construction shown the cap. is formed by stamping, spinning, or drawing up a single sheet of. metal'into a tube opened at both ends, having the projection Oat one en-d,the

enlarged in tern al ca vi-t y n, and the-cont rac ted jneck'0,nwhich latter is screw-threaded-to screw over'the external thread on the shell.

A shoulder 19 at the bottom of thewashersocket n prevents escape of the. washer H, 1

Another featureof improvement relates to the washer H, which is preferably a ring of packingmaterial sprung into: the socketln' and having a central apertureor recess to, into which the stem. I can'freel-y pass. fer to introduce an antifriction membenas a disk of metal, between the washer H and the cap, so that the washer will not be twisted with the screwing on and oflf of the cap. Any

suitable device maybe used for thispnrpose;

but according to the preferred form of my invention I provideanvimproved washer P, having an annularedge portion 'r,;bearing on the ring H, and a central projection s, passing into 'the recess in the ring H and pre venting inward distortion of the latter. The

compression of the ring H- against the edge of theshell makes a leak-tight jointaround the edge, and the compression of the disk 1? I against the ring completes the closure: of the outer end of the'shell.

In use the capcan be employed toapply or remove-the plug Without danger-of impairing the valve-ste'm'and' without any disengage;

ment of the cap-by reason of the internal pressure, the cap; remaining in. engagement cial tool, and when .the cap isplaced upon with the-plu g until drawn out of the'socket.

With a valve 0f the constructionshown, the. finger may be pressed on thestem,.th us de-.,

fiating thevalve without requiring any spetheshell the stem mayextend into the recess of the washer H without dangerof accidental deflation. I 1 i It will be seen that myinvention providesi improvementswhich can be readily and adsvantageonsly availed of, and it will be nn-- (IO.

derstood that the invention is not limited'in. its employment to the particular details of I construction, arrangement, and combination.

of the several featuresshown as constitutingthe preferred form. of the-invention, since it can? beemployed in wholeor in part, accord.-

, ing to such modificationsas cincumstancesior the judgment. of, those skilledin. the art. may

I -pre-.

dictate,"withoutdepartingfrom the spirit of those bf S P s and n'gia reces$ .for xpaSSlDgO-Ver aid. t m

"a screw-threaded socket, in combination with so; driver projections, a val -ve-stein'prm jec ,g-i-ntosaid socket,and.ascrew-driver for entering said; socket'having notches for lcess for receiving said stem. i

j In tire and other valves, aivalve-shell, {in combination with a valve-stem projecting ftdwardthe e-ndof' said shell, a cap screwing fo'ver theendof: said shell,.-and: a ring of packiingmaterial in; said cap: compressed. against the end of said. shell to close the latter, and

.fholding" said ringa'gainstthe end of "theshel'l fin combination with a valve zstern projecting Itowardthe end of said shell, acap screwing ngmaterial in sai'clf'cap compressedfagainst theend'of said shell to close- "the. latter, and ;ha-ving a central; pe'rforation opposite and for receiving the end of said stem, and an antif;friction-disk-between said ring and cap,

- 5.. In tire and other valves, a valveshell,

5 toward the end. ofi said shell,.a cap screwing jover-the end of said shell, and a rin of packngmaterialin said cap compressed against having acentral perforation oppositettheend of saidstem, anda-n antifriction-disk between %saidringand cap having a projection enterinward distortion thereof. For tireand other valves, a c'apco'nsist:

endiofi a valve-shell for closingit, and'having ia-projection adapted 'to'enter said shell and l engagea plu'gwithin the samefsaid projection having ascrew-driver provision at one. end, andi'a socket for receivingavalve-stem at thatend. I

7. In caps for tire and othervalves, a tuthreadat oneend for engaging a valve-shell,

a screw-driver projection at the other end for entering suchvalve-shell'when the cap is reversed, a socket within said projection, and i a. packing material" between said: ends.

. haVing'screw-driver provisions f-or'engagingv 2;. In tire and other valves, a shell having.

a plug screwing in saidj socket 'anzd having.

lhavinga central perforation opposite the end i of said stem, said cap havingprovisions for i 4;. In tire and other valves, a: valve-shell;

oiver theendro f said shell' and alring of pack in combination with a valve-stemprojecting the endfofi said shell to close thelatter, and;

pi-ng'the perforation in the ring and" resisting;

ing of a body adapted to be screwed to the 8. For-tire and other valves,. a capfor closl en-gaging" said projections, and havinga reb'ul-ar bodzy open at both ends having a screw- I ing the end of a valve-shell, having a hollow screw-driver projection at one end adapted to enter said shell and engage a plug within the same said projection having transverse screw -driver notches.

9. For tire and other valves, a cap having a screw-threaded socket for screwing over the end of a valve-shell, a ring of packing material in said socket having a centralperforation, and an antifriction member between said material and the cap.

10. For tire and other valves, a cap having a screwthreaded socket for screwing over the end of a valve-shell, a ring of packing material in said socket having a central perforation, and a member having a portion within said ring for preventing inward distortion thereof.

11. For tire and other valves, a cap having a screw-threaded socket for screwing over a valve-shell, a ring of packing material within said cap, and a disk between said material and cap having a projection entering said ring for preventinginward distortion thereof.

12. In caps for tire and other valves, a cap consisting of a single piece of sheet metal having a hollow interior open at both ends and having provisions for retaining a pack- .ing, and a separate part within and closing witnesses.

GEORGE H; F. SCHRADER. Witnesses:

GEORGE H. FRASER, THOMAS F. WALLACE. 

